Cooling Operation - Fujitsu AUG12LVLB Service Instruction

1-1. COOLING OPERATION

1-1-1 COOLING CAPACITY CONTROL
A sensor (room temperature thermistor) built in the indoor unit will usually perceive
difference or variation between a set temperature and present room temperature, and
controls the operation frequency of the compressor.
The maximum frequency is limited in the range shown in Figure 1 based on the fan speed mode
and the outdoor temperature.
* If the room temperature is 2 degC higher than a set temperature,
the compressor operation frequency will attain to maximum frequency.
* If the room temperature is 2.5 degC lower than a set temperature, the compressor will be stopped.
* When the room temperature is between +2 degC to -2.5 degC of the setting temperature,
the compressor frequency is controlled within the range shown in Table1.
( Table 1 : Compressor Frequency Range )
AB*G18LVTB
AR*G14/18LLTB
AU*G14/18LVLB
AR*G12LLTB
AU*G12LVLB
( Fig. 1 : Limit of Maximum Frequency based on Outdoor Temperature )
Outdoor air
temperature
34°C
30°C
19°C
10°C
0°C
When the room
temperature drops
AB*G18LVTB
AR*G14/18LLTB
AU*G14/18LVLB
AR*G12LLTB
AU*G12LVLB
AMP Air Conditioning
minimum maximum
frequency frequency
18rps 113rps
18rps 80rps
When the room
temperature rises
A zone
B zone
C zone
D zone
E zone
F zone
Fan speed mode
Hi
A zone 113rps
B zone 113rps
80rps
C zone
54rps
D-F zone
A zone
80rps
B zone 80rps
C zone 80rps
49rps
D-F zone
36°C
32°C
21°C
12°C
2°C
Me Lo Quiet
66rps 54rps 34rps
66rps 54rps 34rps
54rps 45rps 34rps
45rps 38rps 24rps
49rps 42rps 34rps
49rps 42rps 34rps
49rps 42rps 34rps
38rps 30rps 22rps
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01-01